I noticed you used lots of loaded words like "life" meaning both daily life and living in itself, as well as "leads to" when you really meant "happens alongside but has no direct association whatsoever with". Still, I'll bite but only if you fix your sloppy English:
Life always leads toends in death.
True, and it is always taken by force of some kind (although it's a stretch in English to call a microbe, germ, deterioration or even a disease a "murderer" anymore than you can call gravity and a rock "murderers" when in combination they happen to kill someone.
Guns don't murder people...).
Birth leads to life.
This is fundamentally backwards. Life leads to birth. In no point in history has birth ever not been preceded by life.
Conception leads to birth.
Life existed before conception in different forms. You'll really need to define this "life" thing further.
Parents are responsible for conception.
This is simply not true. Test-tube babies, fabricated DNA, rape anyone? You'll need to define "parents" a bit better too.
Ergo parents are murderers of their biological children.
Parents are responsible for their children, it is true to a logical extent, but only in the event that they are aware of said responsibilities. If your parents birthed you on Mars, knowing you would not survive, that's pretty screwed up of them I'd say and that's basically the same thing as murdering you purposely. If they birthed you in the Garden of Eden and you happen to trip on a rock and break your neck, well that's the rock that murdered you then, ain't it?
Pure logic.
Prove me wrong
It's hard to prove something wrong that can also not be proven right in the language it was written in, ergo please keep your acid trips to non-internet connected rooms in the future.